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On Monday, 14-year-old YouTube star Nikki Lilly will feature in a special My Life episode that shows how tough life can be for her sometimes.
Last year, Nikki was rushed to hospital as a result of her AVM - or arteriovenous malformation - which is a very rare medical condition. Explained simply, the arteries and veins in Nikki's face do not behave as they should, which causes swelling and life-threatening nose bleeds.
Read more at: https://www.bbc.co.uk/newsround/47170962